OFFICE – WIRED MOUSE – BLACKULTRA COMFORTABLE – CURVED SHAPE ALLOWING TO PERFECTLY FIT THE SHAPE OF THE HAND – PLEASANT GRIP – MORE EFFICIENT CONTROL – THE ADJUSTMENT OF THE SENSITIVITY ON THE FLY ALLOWS YOU TO ADJUST THE SPEED OF THE MOUSE ACCORDING TO THE NEEDS – HAS 6 BUTTONS (INCLUDING NEXT / PREVIOUS / SWITCH DPI 800/1200/1600/2400) – COMPATIBILITY: WINDOWS / MAC – DIMENSIONS: L 12.5 X H 6.9 X D 4.6 CM – LONG. CORD 145 CM – READY TO USE, NO INSTALLATION NEEDED – COUL. BLACK